Condensed Consolidated Statements of Income (Unaudited) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Operating Revenues:
Retail revenues	$ 4,379,000,000		$ 4,693,000,000		$ 11,068,000,000		$ 11,931,000,000
Wholesale revenues	497,000,000		557,000,000		1,261,000,000		1,513,000,000
Other electric revenues	157,000,000		161,000,000		459,000,000		464,000,000
Other revenues	16,000,000		17,000,000		46,000,000		53,000,000
Total operating revenues	5,049,000,000		5,428,000,000		12,834,000,000		13,961,000,000
Operating Expenses:
Fuel	1,553,000,000		1,908,000,000		3,907,000,000		5,057,000,000
Purchased power	164,000,000		215,000,000		455,000,000		460,000,000
Other operations and maintenance	906,000,000		983,000,000		2,817,000,000		2,837,000,000
MC Asset Recovery insurance settlement	0		0		(19,000,000)		0
Depreciation and amortization	449,000,000		431,000,000		1,335,000,000		1,279,000,000
Taxes other than income taxes	237,000,000		239,000,000		690,000,000		686,000,000
Total operating expenses	3,309,000,000		3,776,000,000		9,185,000,000		10,319,000,000
Operating Income	1,740,000,000		1,652,000,000		3,649,000,000		3,642,000,000
Other Income and (Expense):
Allowance for equity funds used during construction	39,000,000		42,000,000		102,000,000		113,000,000
Interest expense, net of amounts capitalized	(218,000,000)		(217,000,000)		(649,000,000)		(638,000,000)
Other income (expense), net	1,000,000		(1,000,000)		12,000,000		(3,000,000)
Total other income and (expense)	(178,000,000)		(176,000,000)		(535,000,000)		(528,000,000)
Earnings Before Income Taxes	1,562,000,000		1,476,000,000		3,114,000,000		3,114,000,000
Income taxes	569,000,000		543,000,000		1,098,000,000		1,123,000,000
Consolidated Net Income	993,000,000		933,000,000		2,016,000,000		1,991,000,000
Dividends on Preferred and Preference Stock of Subsidiaries	17,000,000		17,000,000		49,000,000		49,000,000
Consolidated Net Income After Dividends on Preferred and Preference Stock of Subsidiaries	976,000,000	[1]	916,000,000	[1]	1,967,000,000	[1]	1,942,000,000	[1]
Earnings per share (EPS) -
Basic EPS	$ 1.11		$ 1.07		$ 2.26		$ 2.27
Diluted EPS	$ 1.11		$ 1.06		$ 2.23		$ 2.26
Average number of shares of common stock outstanding (in millions)
Basic	876		860		872		854
Diluted	883		868		880		861
Cash dividends paid per share of common stock	$ 0.4900		$ 0.4725		$ 1.4525		$ 1.4000
Alabama Power [Member]
Operating Revenues:
Retail revenues	1,476,000,000		1,489,000,000		3,822,000,000		3,859,000,000
Wholesale revenues, non-affiliates	79,000,000		80,000,000		210,000,000		218,000,000
Wholesale revenues, affiliates	31,000,000		52,000,000		51,000,000		202,000,000
Other revenues	51,000,000		50,000,000		147,000,000		152,000,000
Total operating revenues	1,637,000,000		1,671,000,000		4,230,000,000		4,431,000,000
Operating Expenses:
Fuel	469,000,000		512,000,000		1,118,000,000		1,335,000,000
Purchased power, non-affiliates	31,000,000		34,000,000		63,000,000		62,000,000
Purchased power, affiliates	41,000,000		49,000,000		147,000,000		152,000,000
Other operations and maintenance	307,000,000		309,000,000		944,000,000		896,000,000
Depreciation and amortization	161,000,000		160,000,000		478,000,000		476,000,000
Taxes other than income taxes	84,000,000		84,000,000		255,000,000		254,000,000
Total operating expenses	1,093,000,000		1,148,000,000		3,005,000,000		3,175,000,000
Operating Income	544,000,000		523,000,000		1,225,000,000		1,256,000,000
Other Income and (Expense):
Allowance for equity funds used during construction	4,000,000		7,000,000		13,000,000		18,000,000
Interest income	4,000,000		4,000,000		12,000,000		13,000,000
Interest expense, net of amounts capitalized	(71,000,000)		(73,000,000)		(217,000,000)		(224,000,000)
Other income (expense), net	(7,000,000)		(7,000,000)		(18,000,000)		(20,000,000)
Total other income and (expense)	(70,000,000)		(69,000,000)		(210,000,000)		(213,000,000)
Earnings Before Income Taxes	474,000,000		454,000,000		1,015,000,000		1,043,000,000
Income taxes	184,000,000		180,000,000		394,000,000		407,000,000
Consolidated Net Income	290,000,000		274,000,000		621,000,000		636,000,000
Dividends on Preferred and Preference Stock of Subsidiaries	10,000,000		10,000,000		30,000,000		30,000,000
Consolidated Net Income After Dividends on Preferred and Preference Stock of Subsidiaries	280,000,000		264,000,000		591,000,000		606,000,000
Georgia Power [Member]
Operating Revenues:
Retail revenues	2,335,000,000		2,609,000,000		5,786,000,000		6,494,000,000
Wholesale revenues, non-affiliates	73,000,000		90,000,000		214,000,000		270,000,000
Wholesale revenues, affiliates	5,000,000		4,000,000		14,000,000		31,000,000
Other revenues	85,000,000		85,000,000		249,000,000		247,000,000
Total operating revenues	2,498,000,000		2,788,000,000		6,263,000,000		7,042,000,000
Operating Expenses:
Fuel	630,000,000		838,000,000		1,642,000,000		2,299,000,000
Purchased power, non-affiliates	79,000,000		127,000,000		266,000,000		297,000,000
Purchased power, affiliates	181,000,000		193,000,000		469,000,000		513,000,000
Other operations and maintenance	398,000,000		453,000,000		1,243,000,000		1,294,000,000
Depreciation and amortization	186,000,000		180,000,000		559,000,000		531,000,000
Taxes other than income taxes	100,000,000		102,000,000		281,000,000		283,000,000
Total operating expenses	1,574,000,000		1,893,000,000		4,460,000,000		5,217,000,000
Operating Income	924,000,000		895,000,000		1,803,000,000		1,825,000,000
Other Income and (Expense):
Allowance for equity funds used during construction	15,000,000		26,000,000		41,000,000		73,000,000
Interest expense, net of amounts capitalized	(95,000,000)		(90,000,000)		(276,000,000)		(257,000,000)
Other income (expense), net	(1,000,000)		(4,000,000)		(10,000,000)		(10,000,000)
Total other income and (expense)	(81,000,000)		(68,000,000)		(245,000,000)		(194,000,000)
Earnings Before Income Taxes	843,000,000		827,000,000		1,558,000,000		1,631,000,000
Income taxes	314,000,000		303,000,000		558,000,000		583,000,000
Consolidated Net Income	529,000,000		524,000,000		1,000,000,000		1,048,000,000
Dividends on Preferred and Preference Stock of Subsidiaries	4,000,000		4,000,000		13,000,000		13,000,000
Consolidated Net Income After Dividends on Preferred and Preference Stock of Subsidiaries	525,000,000		520,000,000		987,000,000		1,035,000,000
Gulf Power [Member]
Operating Revenues:
Retail revenues	347,435,000		362,109,000		880,833,000		957,409,000
Wholesale revenues, non-affiliates	27,462,000		33,921,000		83,309,000		103,814,000
Wholesale revenues, affiliates	30,113,000		52,833,000		95,179,000		79,825,000
Other revenues	16,809,000		19,167,000		48,951,000		50,855,000
Total operating revenues	421,819,000		468,030,000		1,108,272,000		1,191,903,000
Operating Expenses:
Fuel	160,749,000		220,305,000		423,057,000		530,773,000
Purchased power, non-affiliates	18,380,000		20,046,000		41,690,000		37,938,000
Purchased power, affiliates	10,785,000		9,941,000		18,508,000		39,108,000
Other operations and maintenance	74,781,000		74,144,000		229,790,000		227,236,000
Depreciation and amortization	36,169,000		32,673,000		104,649,000		96,733,000
Taxes other than income taxes	27,142,000		29,467,000		76,202,000		79,230,000
Total operating expenses	328,006,000		386,576,000		893,896,000		1,011,018,000
Operating Income	93,813,000		81,454,000		214,376,000		180,885,000
Other Income and (Expense):
Allowance for equity funds used during construction	1,015,000		2,434,000		3,988,000		7,091,000
Interest income	10,000		22,000		1,406,000		56,000
Interest expense, net of amounts capitalized	(14,637,000)		(15,156,000)		(45,703,000)		(43,208,000)
Other income (expense), net	(567,000)		(451,000)		(1,860,000)		(1,461,000)
Total other income and (expense)	(14,179,000)		(13,151,000)		(42,169,000)		(37,522,000)
Earnings Before Income Taxes	79,634,000		68,303,000		172,207,000		143,363,000
Income taxes	30,329,000		25,535,000		64,172,000		52,451,000
Consolidated Net Income	49,305,000		42,768,000		108,035,000		90,912,000
Dividends on Preferred and Preference Stock of Subsidiaries	1,551,000		1,551,000		4,652,000		4,652,000
Consolidated Net Income After Dividends on Preferred and Preference Stock of Subsidiaries	47,754,000		41,217,000		103,383,000		86,260,000
Mississippi Power [Member]
Operating Revenues:
Retail revenues	220,296,000		233,298,000		578,744,000		620,777,000
Wholesale revenues, non-affiliates	77,017,000		78,147,000		195,364,000		215,811,000
Wholesale revenues, affiliates	4,232,000		9,804,000		13,596,000		25,407,000
Other revenues	3,874,000		4,517,000		12,513,000		13,088,000
Total operating revenues	305,419,000		325,766,000		800,217,000		875,083,000
Operating Expenses:
Fuel	127,576,000		157,961,000		321,664,000		402,689,000
Purchased power, non-affiliates	1,357,000		2,314,000		4,434,000		4,660,000
Purchased power, affiliates	15,683,000		8,504,000		35,386,000		36,721,000
Other operations and maintenance	53,541,000		65,851,000		168,937,000		200,730,000
Depreciation and amortization	21,136,000		19,668,000		66,134,000		59,876,000
Taxes other than income taxes	19,975,000		18,297,000		60,312,000		53,029,000
Total operating expenses	239,268,000		272,595,000		656,867,000		757,705,000
Operating Income	66,151,000		53,171,000		143,350,000		117,378,000
Other Income and (Expense):
Allowance for equity funds used during construction	17,763,000		7,291,000		43,460,000		15,413,000
Interest income	143,000		167,000		643,000		910,000
Interest expense, net of amounts capitalized	(9,735,000)		(3,856,000)		(30,563,000)		(15,401,000)
Other income (expense), net	2,441,000		257,000		1,660,000		(759,000)
Total other income and (expense)	10,612,000		3,859,000		15,200,000		163,000
Earnings Before Income Taxes	76,763,000		57,030,000		158,550,000		117,541,000
Income taxes	21,705,000		18,578,000		42,344,000		38,323,000
Consolidated Net Income	55,058,000		38,452,000		116,206,000		79,218,000
Dividends on Preferred and Preference Stock of Subsidiaries	433,000		433,000		1,299,000		1,299,000
Consolidated Net Income After Dividends on Preferred and Preference Stock of Subsidiaries	54,625,000		38,019,000		114,907,000		77,919,000
Southern Power [Member]
Operating Revenues:
Wholesale revenues, non-affiliates	239,916,000		274,980,000		558,338,000		705,106,000
Wholesale revenues, affiliates	112,705,000		85,177,000		330,443,000		239,020,000
Other revenues	2,350,000		2,408,000		5,676,000		5,435,000
Total operating revenues	354,971,000		362,565,000		894,457,000		949,561,000
Operating Expenses:
Fuel	126,109,000		141,968,000		306,738,000		345,841,000
Purchased power, non-affiliates	23,888,000		25,159,000		67,052,000		53,765,000
Purchased power, affiliates	2,650,000		11,423,000		7,904,000		48,700,000
Other operations and maintenance	40,357,000		39,571,000		128,951,000		122,372,000
Depreciation and amortization	37,612,000		31,558,000		103,541,000		92,530,000
Taxes other than income taxes	5,121,000		4,178,000		14,656,000		13,506,000
Total operating expenses	235,737,000		253,857,000		628,842,000		676,714,000
Operating Income	119,234,000		108,708,000		265,615,000		272,847,000
Other Income and (Expense):
Interest expense, net of amounts capitalized	(17,210,000)		(19,886,000)		(44,801,000)		(56,489,000)
Other income (expense), net	(522,000)		(158,000)		(686,000)		(359,000)
Total other income and (expense)	(17,732,000)		(20,044,000)		(45,487,000)		(56,848,000)
Earnings Before Income Taxes	101,502,000		88,664,000		220,128,000		215,999,000
Income taxes	33,126,000		32,593,000		75,834,000		77,584,000
Consolidated Net Income	$ 68,376,000		$ 56,071,000		$ 144,294,000		$ 138,415,000

[1] After dividends on preferred and preference stock of subsidiaries